rear tire

[wills89fj1200]

What is the biggest rear tire that will fit on stock swingarm

[Mark Olson]

If you are talking about what will fit in between the stock swingarm then a 180 is as big as ya wanna go.

[Pat Conlon]

I recall seeing on Barry's UK site where someone fitted a 190. He had to use counter sunk bolts on the sprocket to get the sprocket as close to the swing arm as possible allowing the chain to clear the tire.

[andyb]

Depends on the tire.  Different makers will have a different actual width between tires that are nominally the same size.  Also depends on the rim and thus the shape of the tire when mounted.